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Finding the Fourth Proportional to 290,291.44, 400,580.40 and 162,942.64

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Solution

The fourth proportional to 290,291.44, 400,580.40 and 162,942.64 is: 224,848.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,291.44 : 400,580.40 = 162,942.64 : x
  2. Step 2: Convert to fraction form
    290,291.44/400,580.40 = 162,942.64/x
  3. Step 3: Cross multiply
    290,291.44x = 400,580.40 × 162,942.64
  4. Step 4: Simplify right side
    290,291.44x = 65,271,627,908.26
  5. Step 5: Solve for x
    x = 65,271,627,908.26/290,291.44
  6. Step 6: Final answer
    x = 224,848.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.